Anjaneyulu, K. “Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium Cepa) Using DRIS”. Journal of Horticultural Sciences 3, no. 1 (June 30, 2008): 39–42. Accessed October 12, 2024. https://jhs.iihr.res.in/index.php/jhs/article/view/592.